Throttle-valve.



NQ.872,797.. PATENTEDDEG.8,1907. J.YS.OHAMBERS..

. THROTTLE VALVE.

'APELIUATION FILED MAR. 31. mos. RENEWED my 28, 1907.

2 SHBETSSHEE.T 1-

UPATENTED DEG'. 3,1907.

J. s. CHAMBERS; THROTTLE VALVE. APPLIOATION FILED MAR. 31, 1906. RENEWEDMAY 28, 1907.

2 SHEETSr-HEET 2.

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JOHNB. CHAMBERS, F WILMINGTON, NORTE QAROLINA.

TQTTLE-VALVE.

no. veneer;

Epecifleation of Letters Patent.

Patented Dec. 3, 1907.

Application filed llcrcli 31. 1906. Serial No. 309}02(l. Renewed May 28.1907. Serial No. 376,207.

To all whom-it may concern: I

ea it known that 1, 50m: S, CHAMBERS, a citizen of the United States,and resident of Wilmington, in the county of New Hanover end State o1":North Uei'oline, have invented new and useful. improvements in Throttle-Valves, of which the following is e specificalion.

invention relates. to improvements in at device of the above characterin which the unbalanced area of the throttle stem is eliminoted byreason of the closed cavity in the etcndpipe end also the use of athrottle stern pecking is obviated because of this closed cavity.Furthermore, it is im )ossible for pine or cotters to Work "out on tieinside of the dome thus putting the engine out of 0 emlion and also theopemting rod may 6 zfemoved or adjusted at plccsuz'e while fullpi'eseine is on the boiler.

A practical embodiment of my invention is represented in theaccompanying drawings, in which Figure 1 represents so muchol elocomotive boiler in top plan, pertielly in section as will ill her 6.

give a clear understanding of the construcnon and operation of myIXIVQILLIOD', Fig. 2 1S detail side elevation partially in section,

end Fi 3 is a detail sectional view showing more clearly the throttlelever and its edjecent arts.

The ioiler is denoted by 1 well. of the cal) by z.

The dome is denoted by 3 end'the standpi-pe therein lay/i. The stand ipeis provided at its to with the usual ve ve seet 5 in which is seetet theouter throttle v'elve mem- This throttle valve member 6 is provided withit sent 7 concentric with the seat 5 in which eeeted an intermediatethrottle velve inemher 8 This int-efmediete throttle velve member 8ieprovided with'e seat 9 for e innni thine-tie velve member 10 carriedlog n extends downwardly into and the front a closed cavity 12 formed byextending a pipe 13 inwardly and upwardly in the standpipe- 4. i v

- A loose connecting iece 14 has a lower head 15 which is fitte to slidevertically in the upper end of the, pipe 13. This connect-' in'g piece3.4 extends upwardly into contactwith the bottom of the Intermediatethrottle valve member 8 Where it surrounds a depending lug 16 011 saidvalve member. necting iece 14 is provided with redial arms 17 who 1 arelocated beneath and spaced from the throttle valve member 6. The head 15ofthe loose connecting piece Mis provided with ebutments 18 wlnchm'earranged to be engaged by a shoulder 19 on the stem 11. The connectingpiece 14 is provided with lugs 14* which normally rest upon the top ofthe pipe 13.

A. valve operating rod 20 extends laterally from within the closedcavity 12 to a oint exterior to the dome 3, the said rod eing locatedwithin e tube 21 which is secured at its inner end to the stendpipe andat its outer endto the dome by means of a, plug 22.

A steam-tight joint is provided for the operating rod 20 within the plug22, which steam-tight joint in the resent instance is' shown ascomprising 8, p urelit of annular shoulders 23 on the rod 20 Whic arelocated in e suitable metal filling 24c inthe plu 22 held in position bya screw cap 25. he velve operating rod 20 has fixed thereto Within thecavity 12 an arm 26 to the free end of which is loosely pivoted thelower end of the valve stem 11; Exterior to the'dome, the valveopereting'rod 20 has fixed thereto e depending arm 27 to the lower endof Whichis secured the-forward end of a connecting rod 28, the end ofwhich extends throu h the front Wall of'the cab and has ed t ereto arack bar 29 which is fitted to sli .e in a suitable bracketfil).

A throttle lever 31 ispivoted at 32 in the bracket and is provided witha toothed segment 33 which intermesheswith the rack he? .29 whereby thevalve operating rod 20 may be rocked. by the movement of the throttlelever 31 4 In ope-rat supposing the ports to be in the position :3 ownin Fig. '2, as the throttle lever is moved 'renrwardly, the arm 25 ofthe valve operating rod 20, located in the cavity 12' is swung upwardly.The first part of its 11 Ward movement o en the inner throte t valvemember 16 t e permitting the This consiege? steam. to flow into thecavity 12 for counterbalaneing the intermediate throttle valve member 8.the rod 11 is moved upwardly, its shoulder 19 will engsge the abutments18 of the connecting piece 14. As the corlrieetin piece 14 movesupwardly, it will lift the vs vs member. 8 away from the uter throttlevalve member 6 and finally the arms 17 of the. connecting piece willengage the bottom oi the throttle valve member 6 and lift it from itsseat in the top of the stand pipe. Asthe operation is reversed, thevalve member 6 Will first be closed, then the valve member 8 and finallythe valve member 10, thus absolutely shutting oil the admission of steamto the cavity 12 when the standpipe is closed. provided forcounterbalanoing the Volvo.

at the some time the need of e throttlestere.

packing is obviated.

For the purpose of pennitting. the. valve operatin rod 2% to be readilyremoved or ad justed, tlle inner'eiid of the rod 20 is provided withenermular portion 3% which enters e recess in the arm 26 and the arm 26is provided with a bearing stud 35 located in a recess 35 in thestandpipe.

3.. stand-pipe, a valve, its seat, a closed ce-vity in the etendpipebelow the valve and 'QHEZEYBS extending into the closed. cevitjy forseeming and cl osing the valve.

2. In 4 a standpipe, a valve comprising a plurality ct members, seatstherefor, a closed is the stondpipe below the valve and means extendingmto the closed .ievity for opening and closing the valve... 3. In astandpipe, s valve compnsmg a plurality of valve members, seatstherefor, a

closed cavity in the standbipe belowthe valve, a valve stem extendedinto the said closed cavity and means extending into the cavityconnected to said valve stem for openingand closing the valve.

e. in a standpipe, a valve comprising outer,'intermediste and innervalve members, seats therefor, a closed cavity, a valve stem extendedinto said cavity and means extending into the cavity connected to saidvalve stem for opening and closing the valve.

5. In a standpipe, a valve comprising e plurality of valve members,seats therefor, a

closed cavit in the .standpipe below the valve, a valve stemextendinglrom. one of the vslve members into the closed cavity, acomiectin piece lie-ling a sliding m0vement rated by the valve stem intosaid c 261 means IiQGCi-Cl. to the the val lo a 1 I valve compris ng ont, an intermediate mom nor member and. i

the stsndpipe be ow the v tile 1n- It will thus be seen thstmesnseretermediate valve member and having e slial ing movement in saidcavity and arranged to engage the outer valve member as the connectingpiece is raised, a valve stem. for the inner valve member having" ashoulder arranged to engage the connecting piece as the valve stem israised after the "mar valve is opened to open communication to theclosed cavity and means connected to the valve stem for opening andclosing the valve.

7. In it standpipe, a valve, its seat, aclosed cavity in the stsndpigoebelow the valve, a valve stem extended into the cavity and a valveoperating rod extending into s id cavity COIlIlQutGCl to valve stem foropening and closing the sainc.

:8. "hiavstamteipez, a velve itsfse'at, a closed eevltjl o theSQiEEYPIplRJOEV QEG valve, a valve stemefittended' into the cavity, avalve operating rod extended into the cavity and.

an arm fixed to the rod connected to the valve stem for opening andclosing the valve.

9. In a standpipe, a valve, its seat. a closed cavity in the standpipebelow the valve, a

valve stem extended into the cavity, a throttle lever" and a valveoperating rod extended into the cavity having an erm within the cavityconnected to the valve stem and an arm exterior to the cavity connectedto the throttle lever.

10, A steam dome, standpipe therein, a throttle valve, its seat, valvestern and e rocking valve operating rod having an arm connected to thevalvestem said rod being extended to the exterior through the side ofthe steam dome.

11. A. steam dome, a standpipe therein, a throttle valve, its seat, avalve stem, e throttle lever and a rocking valve operating rod having anarm connected to thevalvestem at a point within the standpipe and an armexterior 'to the steam dome connected to the throttle lever.

12. A steam dome, a standpipe therein, a throttle valve, its seat, aclosed cavity in the standpipe below the valve, a valve stem. extendedinto the closed cavity and s valve operating rod having an arm in saidclosed covityconneoted to the valve stem, said valve oJerating rodextending to the exterior of t 14;. A stcem dome, a stendpipe therein, a1

closed cavity in the stendpipe, a ti1be,co11 sec-ting; the closed cavitywith the side wall of the dome, a throttle valve, its seat, a valve stemencoded into said cavity and a. valve operating rod located. 12 saidtube having an arm in the cavity connected to the valve I stem.

A steam dome, a standpipe therein, a closed cavity in the standpi ie, atube connecting the closed cavity wit the side oi the dome, a throttlevalve, its seat, a valve stem 7 extended into the closed cavity, athrottle lever and a valve operating rod located in said tube having anarm in the closed cavity connected to the valve stem and an arm eXteriorto the drum connected to the throttle lever.

i 16. A steam dome, a'standpipe therein, a closed cavity in thestandpipe, a throttle valvef'its seat, 'a valve stem extended into theclosed cavity, a valve operating rod extended into the closed cavity, avalve operating'rod extended from the exterior of the dome intothe-closed cavity and an arm retended into the cavity, an arm located insaid cavity connected to the valve stem anda valve operating rod locatedinsaid tube rcmpvablyengaged with said arm in the closedcavity.

18. A steam dome, astand-pipe therein, a throttle valve, its seat, avalve stem, a rocking valve operating rod extending through the'vvall ofthe dome and a steam-tight joint for said rocking rod comprising astationary metal filling through which the operating rod passes and aplurality of annular shoulders fixed-on the rod and located in saidfilling.

19. A steam dome, a stand-pipe therein, a

closed cavity in the stand-pipe, a tube connecting the side Wall of thedome with the cavity, a throttle valve,'its seat, a stem extended intothe cavity, a valve operating rod in the "tube connected to said valvestem and a steam-tight joint comprising a metal filling through whichthe rod passes and a plurality of annular shoulders on the rod locatedin the said filling.

20. A steam dome, 'a stand-pipe therein, a closed cavity in thestand-pipe, a tube connecting the side wall of the dome with the cavity,a throttle valve, its seat, a stem 8X tended into the cavity, -avalveoperating rod located in the tube and connected to the said stem and asteam-tight joint comprising aplug, a metal filling therefor throughwhich the rod passes and a plurality of annular shoulde on the rodlocated in the said fill- I ing.

In testimony, that 1 claim the foregoing as my invention, 1 have signedmy name in presence of two witnesses, this twenty-fourth day ofMiarch,1906. r

JOHN S. CHAMBERS.

Witnesses:

O. M. BUTLER, JAs. P. WINGO, JR.

